Originally Posted by Brabus 3.6-24

N30/1 ASR controle module E500:

#25 = ASR controle module 12VDC signal to the ASR controle module "Engine running signal" (This is the pin that tells the ASR controle module that the engine is not turned on)
#35 = ABS instrument cluster MIL lamp e17 (The yellow ABS Square lamp)
#37 = ASR instrument cluster warning lamp e21 (The triangle in the speedo)

So the Renntech simply does just remove the "engine running" signal to the ASR controle module and makes it "think" that the engine is turned off
And because of that the ASR MIL and ABS MIL lamps will come on, because the module is in a kind of "ignition and test bulb state" even though the ABS is still in funktion, becuase the ASR module also can activate this lamp and does as the module is "ignition state testing its bulbs" therefore they had to remove the pin 35 to avoid the ABS lamp litting up.

This also give sense as putting the ASR module into an ignition state testing is not seen as an error and will therefore not activate anny error codes.
They also remove the warning triangle lamp wire because you dont want that lamp to come on as this is also tested in the ignition test state.
But instead of turning the ASR MIL lamp off they led the ASR MIL lamp indicator lit up, so this is an indicator for you that ASR is shut off.

This is also likely why this system was only developed for the ASR in cars with the stand alone ASR module box N30/1
Because the ASR was also implemented in the 6 cyl. cars such as the E320 and the earlier 300E 12 and 24 Valves from 89-92
These cars have an older ASR system called ASR II and the newer ASR III in the 500E/E500 is just not the same system.

The ASR II system was an futher develping of the ABS controle unit.
So therefore you cant just remove ASR as this signal to the ASR controle module is not pressent or used on these ealier ASR II systems.

So to do it on the 6 cyl. models, you would have to take apart the controle unit and fix it on the main boards elektronics some how

Originally Posted by Turbo E320

The Traction Control and ABS are tied into the ABS pump. In order to fool the system into never turning on the ETC you would have to locate the speed sensor wires going into the ETC computer and install voltage regulators on them to keep the voltage streaming a constant X voltages to the system so the system thinks all 4 wheels are just peachy. This is assuming of course that a sort of fixed voltage is fed to the system or there is a threshold from 0-5v or 0-12v that, when surpassed, actives the system.

What did I do to deactivate the system? I just found the pump's relay wire and installed a push button switch on it but that deactivates the ABS as well. The only real advantage to deactivating the ETC is that the car doesn't shake around if your hard cornering at the track and you find out how annoying the one wheel peel starts are. The ETC greatly aids in the launching of the car.

Originally Posted by XJguy

I bit late to this rodeo, but has anyone successfully disabled/tricked the ASR in an E320 while retaining the ABS?

Originally Posted by 97 SL320

The year of car matters. 97 ( or very very late 96 ) was the first year for the drive by wire throttle using Bosch ME 2.0 / 2.1. This is completely different from the 1/2 mechanical 1/2 electric throttle body.

The ME 2.0 / 2.1 system has a dyno mode accessible from the 38 pin under hood connector. I don't recall what pin needs jumpered / grounded / power applied to.

Originally Posted by XJguy

Thanks, yes I have read that after the w124 model, the M104 had a setup that is easily defeatable. But so far I have not found a way for my car.

Originally Posted by 97 SL320

My point is, you have not identified your cars year / build date or if drive by wire.